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jmikaelr/README.md

Richard Johnsson

Applied mathematician and financial engineer interested in quantitative finance, numerical methods, artificial intelligence, and high-performance computing.

I enjoy understanding systems from first principles and often build tools myself to explore models, algorithms, and data.

Areas of Interest

  • Quantitative finance and asset pricing
  • Stochastic models and derivatives
  • Numerical methods and scientific computing
  • Artificial intelligence and reinforcement learning
  • High-performance computing
  • Systems programming

Programming

Language Experience
Rust Exploring systems programming and building high-performance tools
Mojo Developing numerical and data-science tooling with a focus on performance
Python Data science, machine learning, and quantitative finance projects
MATLAB Numerical methods, optimization, and engineering simulations
R Statistical analysis and financial modeling
SQL Data querying and database work

Current Focus

  • Building numerical and scientific computing tools in Rust and Mojo
  • Implementing financial models and simulations from scratch
  • Exploring reinforcement learning and AI methods for decision and optimization problems
  • Studying performance-oriented machine learning systems

Technical Interests

  • Monte Carlo methods
  • Option pricing and stochastic calculus
  • Reinforcement learning and decision processes
  • Neural networks and optimization
  • Performance-focused numerical libraries

Collaboration

I’m always interested in discussing quantitative finance, numerical methods, AI, and high-performance computing.

If you’re working on interesting problems in these areas, feel free to connect.

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  1. OptionPricingBSDE OptionPricingBSDE Public

    Pricing Options using BSDEs

    Python 4 1

  2. DLOptimalStopping DLOptimalStopping Public

    Solves the optimal stopping problem for American options, utilizing Deep Neural Network

    Python

  3. MonteCarloSimulation MonteCarloSimulation Public

    V

  4. PlatsbankenScraper PlatsbankenScraper Public

    Rust

  5. AoC2025 AoC2025 Public

    Advent of Code 2025

    Rust